Alexei Kervezee and Daryl Mitchell played starring roles as Worcestershire condemned the Netherlands to a 44-run Yorkshire Bank 40 defeat in Rotterdam.
The Pears posted a testing total of 293-4, with former Holland international Kervezee making a quick-fire 81 and skipper Mitchell top-scoring with 92, before bowling out the hosts for 249.
Chris Russell's return of 4-32 hastened the home side's demise but Tom Cooper was unlucky to finish on the losing side after a fine all-round display, taking 2-56 and scoring an unbeaten 78.
Visiting captain Mitchell shared an opening stand of 98 with Moeen Ali (48) before combining with Kervezee to add 87 for the second wicket.
Those partnerships set the visitors well on their way, but there were also handy runs late in the innings as Ben Cox clubbed 34 not out, including three sixes, and Gareth Andrew added 20.
The Dutch made a positive start to their run-chase, adding 41 in seven overs before Jack Shantry removed Stephan Myburgh for 25.
Eric Szwarczynski was run out for 18, paving the way for a partnership of 92 between Wesley Barresi and Cooper that gave the home side hope of pulling off the victory.
Barresi's departure to Shantry for 65 put Worcestershire back in control and although Australian-born Cooper continued to score freely wickets tumbled at regular intervals at the other end.
Five of the next seven batsmen failed to reach double figures as Russell added to his tally of wickets. Pieter Seelaar's 18 was the best support Cooper found before Russell wrapped things up by clean bowling List A debutant Vivian Kingma for a duck.